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Q. Index nos. show changes rather than absolute amounts of change.

Q. While computing a weighted index, the current period quantities are used in the:

Q. The following numbers represent the ages of people on a bus: 3, 6, 27, 13, 6, 8, 12, 20, 5, 10. Calculate their mean of their ages.

Q. Find the mean of x + 77, x + 7, x + 5, x + 3 and x – 2?

Q. In a moderately skewed distribution, the mode and median are 20 and 24 respectively. Calculate the value of mean.

Q. In constructing index number geometric mean relatives are:

Q. Roger bowled 7 games last weekend. His scores are: 155, 165, 138, 172, 127, 193, 142. What is the range of Roger's scores?

Q. What is the median of 33, 86, 68, 32, 80, 48, 70?

Q. When the values in a series are not of equal importance, we calculate the:

Q. If r = ± 1, the two regression lines are...............................